Start, automatic chock, runs fine. chock stops, and engine studders and stalls idle too low. twin vaccuum hoses pop off carb when revving in park, then van won't shut off.
Just a shot in the dark here. Mikuni carbs were problamatic on that engine. I remember them well. They had internal vacuum leaks and diapragm leaks just like you describe. I dont kn ow if you can get it any more but the fix used to be a new reman carb. they were not rebuildable. But I always wondered why you coul not have a base plate adapter made by a machine shop to adapt any other simpler carb to it? as long as your cfm rating was the same--ya know? Like take a holley 2 barrel off a k-car and adapt it on. Anyway I hope I helped. But that is what it sounds like. Carb replacement. Thanks
It
can be low fuel pressure issue or clogged fuel pump. Or its engine related
issues,---------------
Check
the help link mentioned below to troubleshoot the problem: ------
Engine stalls when gas is given?
http://technoanswers.blogspot.in/2012/01/engine-stalls-when-gas-is-given.html
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Car stalls when MAF sensor is connected?
http://technoanswers.blogspot.in/2012/01/car-stalls-when-maf-sensor-is-connected.html
------------
Car Engine Stalls While Driving?
http://schematicsdiagram.blogspot.com/2011/12/car-engine-stalls-while-driving.html
--------------
Car stalls and throws white smoke from exhaust?
http://repairhelpcenter.blogspot.com/2012/01/car-stalls-and-throws-white-smoke-from.html
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Stalls And Dies At Stop Sign?
http://www.howtobyme.blogspot.com/2012/07/stalls-and-dies-at-stop-sign.html
------------
GMC Sonoma Stalls and idles low
http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
------------
Nissan Pathfinder stalls and bucks on Acceleration?
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
-----------------
1992 Chevrolet stalls and shutdown?
http://schematicsdiagram.blogspot.in/2012/04/1992-chevrolet-stalls-and-shutdown.html
------------
Stumbling and stalling at idle after engine rebuild?
http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html
--------------
1990 mazda 323 stalls and quit running?
http://technoanswers.blogspot.in/2012/02/1990-mazda-323-stalls-and-quit-running.html
-------------
2000 Toyota
Camry: Idling and Stalling Problem?
http://whatisbyme.blogspot.in/2012/05/2000-toyota-camry-idling-and-stalling.html
---------
1995 Toyota
Corolla: Stalls, Sputters and Pops Through Intake Manifold?
http://whatisbyme.blogspot.in/2012/05/1995-toyota-corolla-stalls-sputters-and.html
----------------
1999 Toyota Camry: Erratic stalling and high engine RPM at
idle?
http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html
--------------
Dodge Dakota stalls, stumbles at idle. Has low fuel flow and
runs hot?
http://schematicsdiagram.blogspot.in/2012/03/dodge-dakota-stallsstumbles-at-idlehas.html
--------------
1994 Toyota
4Runner: Stalls and Stops While Driving?
http://whatisbyme.blogspot.in/2012/05/1994-toyota-4runner-stalls-and-stops.html
---------------
1997 Toyota Camry: Erratic Idle and Intermittent engine
stalling?
http://technoanswers.blogspot.in/2012/04/1997-toyota-camry-erratic-idle-and.html
-------------
Ford Maverick: No Idle and Stalling issues?
http://schematicsdiagram.blogspot.in/2012/04/ford-maverick-no-idle-and-stalling.html
-------------
These
details will help.
Thanks.
http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html
--------------
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perhaps. after high choke idle, engine slows in about a minute or two, then idle drops so low, the engine stalls. i'm thinkin vaccuum advace, but the 2 vaccuum hosses blow off bottom of carb when revved up
Sounds like a mikuni carb on a 2.6 mitubushi engine.Can you tell me what you mean by choke stops? You mean it pulls open all the way after time like it should?
cranks fine but while driving it will start to slow down like it is running out of gas. It will also backfire through the intake then start running fine.
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